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AlphaRiser Cast-In Riser - Integrated modular riser floor system

Verified by manufacturer 2 days ago

Comtec

A fully preassembled riser floor unit, delivered ready to lift into place, fix to the floor or structure, and concrete around for seamless integration into the building.

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Application

Designed for open floor slab construction, the AlphaRiser CIR is a pre-assembled cast-in riser unit suitable for fixing directly to the casting deck or supporting primary steelwork.

Description

AlphaRiser Cast-In Riser provides a pre-installed fire-rated solution for service penetrations in concrete slabs, streamlining installation and ensuring regulatory compliance in high-rise construction.

Features and benefits:

  • Enhance safety and eliminate the risk of falls by ensuring the void is permanently covered from the outset.
  • Eliminate the need for temporary shuttering and edge protection.
  • Fast installation reduces labour time on-site.
  • Create ultimate versatility and convenience with a fully adjustable support system to accommodate MEP positioning.
  • Compatible with all types of construction methods.

General information

Color

Grey

Finish

Smooth

Coated

Material

Steel

Glass Reinforced Plastic (GRP)

Shape

Square

Rectangle

Length

Bespoke

Width

Bespoke

Height

Bespoke

Warranty description

15 year

Uniclass

Pr_25_71_29_52 Modular riser flooring unitsPrimary

CAWS

E20/230 Modular riser flooring units

Specification data - Modular riser flooring units

Classification data

Certification

Third-party certification by a United Kingdom Accreditation Service (UKAS)-approved independent laboratory.

Designation

Grade S275 mild steel.

Plate

6 mm thick glass reinforced plastic gratings (GRP).

Guidance for specification option:

  • Varying sizes to meet customer requirements – all with non-slip resin bonded granular surfaces.
  • All grating conforms to BS 4592-4 and 6:2006.

Frame

Steel, zintec pre-electrolytic coating with zinc-rich spot coating to weld points.

Size

As drawings.

Guidance for specification option:

  • The size of riser units can vary according to customer requirements.
  • Units are usually made to a maximum of 3 m in length due to transportation and handling limitations.
  • Sections can be bolted together, however, to form gratings of almost any overall size.
  • Spans for AlphaRiser frames, grating, and profiles will be calculated according to the loading requirements.

Manufacturer guidance

Consult manufacturer and insert requirements.

Additional supports

-

Size

100 x 50 x 6 mm.
150 x 42 x 9.5 mm.
Other.

Guidance for specification option:

*Other sizes and combinations can be used including flitch plates and back-to-back channels, but the above sizes are used in most cases. We will always make it clear on our drawings what type, size, and specification of structural members are being used and produce structural calculations to ensure that units comply with regulatory, structural, and customer requirements.

Manufacturer guidance

Joists.

Material and finish

Glass reinforced plastic (GRP) channel – to BS EN 13706-1, 2 and 3.

Fixings

M10 x 25 x 8.8 bolts, locking nuts and washers – BZP finish.
M10 x 8 mm Alphariser sprung channel nuts – BZP finish.
3 mm thick mild steel Alphariser joist end – Zinc plated finish.

Prepared openings

As drawings.

Fire resistance

To EN 13501-1, Class Bfl-s1.

Manufacturer guidance

GRP fire-rating.

Slip resistance

Non-slip resin bonded granular surfaces.

Integral accessories

4 mm thick mild steel sling lifting plates – mill finish.
1 tonne certified polyester x 2m long (typical length) lifting sling (4 per unit).

Guidance for specification option:

M10 x 25 x 8.8 bolts, locking nuts and washers – BZP finish.

Sustainability data

Contains Red List materials

No

Country of product manufacture

United Kingdom

Manufacturing plant location

Material

Steel
Glass Reinforced Plastic (GRP)
Carbon dioxide equivalent

Carbon dioxide equivalent, as defined in BS EN 15804

Self-declared

Stage
Normalised unit (kg CO₂ eq/kg)
Declared unit (kg CO₂ eq/m²)
Stage:A1–A3 ('Production stage')
Normalised unit :
Declared unit : 116

Expected Life

60 year

Literature

AlphaRiser - Technical Data Sheet

AlphaRiser - Technical Data Sheet

AlphaRiser - Brochure

AlphaRiser - Brochure

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